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21st Indiana Infantry / 1st Indiana Heavy Artillery
in the American Civil War

Online Books:
21st Indiana Infantry Officer Roster - Report of the Adjutant General of the State of Indiana, Volume 2, by W.H.H. Terrell, Adjutant General, Indiana, 1865     View Entire Book
21st Indiana Infantry Soldier Roster - Report of the Adjutant General of the State of Indiana, Volume 4, by W.H.H. Terrell, Adjutant General, Indiana, 1866     View Entire Book

Regimental History
Twenty-first Indiana Infantry (1st Indiana Heavy Artillery). — Cols., James W. McMillan, John A. Keith, Benjamin F. Hayes; Lieut. -Cols., John A. Keith, Benjamin F. Hayes, William Roy, James W. Connelly; Majs., Benjamin F. Hayes, William Roy, James Grimsley, Edward McLaflin, John W. Day, James W. Connelly, Isaac C. Hendricks, Samuel E. Armstrong. This regiment was organized at Indianapolis and was mustered in July 24, 1861. It left the state a week later for Baltimore where it remained until Feb. 19, 1863, participating in Gen. Lockwood's expedition to the eastern shore of Virginia. It then moved for Newport News, from which place it sailed with Butler's expedition, and was on the "Great Republic," off the mouth of the Southwest Pass during the bombardments of Forts St. Philip and Jackson. A portion of the regiment landed in the rear of St. Philip and waded across to the quarantine, the balance going up the Mississippi to New Orleans, being the first of the army to land. It went into camp at Algiers, and captured several steamers on Red river. The regiment was landed at Baton Rouge, June 1, and in the battle at that place Aug. 5, it fought an entire brigade for three and one-half hours, losing 126 men. At Des Allemands in September it killed 12 of Walters' Texas Rangers and captured 30 prisoners. It was at Berwick bay from Oct., 1862, to Feb. 1863. Part of the regiment was transferred to gunboats, being in engagements almost daily with the iron-clad Cotton; accompanied Weitzel's advance up Bayou Teche, and was in the fight at Comet's bridge and the destruction of the Cotton. Col. McMillan was appointed brigadier-general on Nov. 29, and Lieut-Col. Keith was commissioned colonel. In Feb., 1863, the regiment was transferred to heavy artillery service and designated 1st heavy artillery, two additional companies being organized and attached later in the year. Part of the regiment accompanied Gen. Banks up the Teche, participating in the second battle at Fort Bisland. Later all but two companies moved to Port Hudson, and participated in the siege for 42 days. One company was in a desperate fight at La Fourche crossing in June and Co. F. was captured at Brashear City. In August three companies accompanied the Sabine Pass expedition and were in the engagement at that point. The greater number of the regiment reenlisted during the winter of 1863-4, and were given a furlough. Cos. G and H bore an active part in the Red River expedition in 1864, and were stationed at different points in the Department of the Gulf during the remainder of the year. Six batteries of the 1st participated in the investment of Mobile and the reduction of Forts Morgan, Gaines and Spanish Fort in April, 1865. At the close of active operations the batteries were assigned to duty in Forts Morgan, Pickens and Barrancas, in the works at Baton Rouge, and at other points of river defense, until mustered out Jan. 13, 1866. The original strength was 1,363; gain by recruits, 1,332 ; reenlistments, 448; unassigned recruits, 696; total, 3,839. Loss by death, 392; desertion, 228; unaccounted for, 200.

Regimental history taken from "The Union Army" by Federal Publishing Company, 1908 - Volume 3

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